Magic System in a Parallel World

"What the hell is that black fog? I cannot see what's happening inside!" Oscar exclaimed as he watched the situation from many meters away.

"I don't have the slightest clue as to what is happening over there, but I know that I don't want to be anywhere near that area right now." Jasper swallowed nervously.

"Dark magic… How ominous…" Oliver sighed, feeling chills all over his body just from looking at the black fog in the distance.

"The amount of mana coming from that fog… I'd say it's at least Tier 5 magic— probably Tier 6." Sarah said.

"Plague of Destruction. It's a Tier 6 spell." Lia calmly said.

"Plague of Destruction?! Isn't that an ultra rare magic spell?! Just who are you guys…" Sarah was speechless.

She has heard of the magic spell before, and from what she heard, it was only accessible to very few people in this world.

Meanwhile, the monster stampede was halted completely by Leo.

And even though he wanted the Devourer of Gods to consume all of the monsters, his Plague of Destruction was simply too strong, killing most of the monsters before the Devourer of Gods could even consume them.

Leo deactivated both the Elder's Orb of Restraint and the Devourer of Gods before removing the Plague of Destruction.

When the black fog disappeared, all that was left behind were the monsters' bones and mana cores.

"Holy fuck… Am I seeing things, or did he just kill over 200 B-Rank monsters by himself and in just a few minutes?" Oscar mumbled in a baffled voice.

"Is he really a C-Rank Adventurer? He's not an S-Rank Adventurer fooling us, right?" Jasper mumbled.

"How can he have so much power at such a young age? I'm envious." Oliver sighed out loud, feeling a little dejected after comparing himself to Leo.

If they knew that Leo had only started learning magic a few months ago, who knows how they'll react.

After dealing with the monster stampede, Leo beckoned for his teammates.

"I can't believe you actually managed to do it. You're one crazy bastard, Leon." Oscar said to him with a stiff smile.

"It's not much." Leo smiled back, but his smile was much more relaxed.

"How do you feel? You must have used up most of your mana just now, right? I can take over for you until you recover your mana." Jasper said.

Leo chuckled, "I'm fine."

After all, his mana returned to full capacity before they even arrived.

They continued to explore the 2nd floor of the Labyrinth shortly after.

Two days later.

"Are we walking in circles or something? We've been walking like this for two days now." Leo said.

"No, we've been going in a straight line. I marked our path with poison so that we wouldn't encounter such a problem." Sarah said. "Are you tired? We can take a break if you need one."

"No, I was just wondering since we still can't see the end of this floor."

They continued walking for another 24 hours.

During this time, they encountered a second monster stampede, but the group of monsters wasn't as big as the previous one. Naturally, Leo made short work of them.

Then, eight hours later, they encountered a third monster stampede.

"Another monster stampede? Just what is going on? Why are there so many stampedes in this Labyrinth?" Sarah mumbled to herself.

"We'll leave this one to you as well, Leon." Oscar said before running to a safe distance without needing anyone to tell him.

A minute later, Leo could see a massive group of monsters running towards their direction.

It only took a glance for Leo to tell that this monster stampede had more monsters than the previous two combined.

"400… No, there are over 500 monsters this time." Lilith said after a quick glance at the monsters.

"Just in case, I'm going to get a little help this time." Leo said with a slight smile on his face.

The next moment, he summoned a clone of himself.

This shadow had the exact same height and figure as Leo. If it weren't for its shadowy appearance, it would've been a splitting image of Leo.

After summoning his clone, Leo activated Dark Aura before he started overcharging Plague of Destruction.

Once the monsters were close enough, Leo released his weapon of mass destruction, consuming the whole monster stampede with Plague of Destruction.

And just like before, he used the Elder's Orb of Restraint before summoning the Devourer of Gods to devour as many monsters as it could before the Plague of Destruction killed everything.

<You have been awarded 4,129 Magic Points for your killing spree of 682 monster kills>

'It was definitely a good decision to participate in this Labyrinth raid. I am getting so many Magic Points.'

In just the last few days, he has acquired almost 10,000 Magic Points just from killing monsters, and he still had plenty more floors to clear— at least he hoped so.

"How are you not running out of mana? Do you have a magic artifact that gives you improved mana regeneration or something?" Jasper asked him out of curiosity.

He nodded, "Yes, something like that."

"Do you know how rare and sought after magic artifacts like that are? Even a low-grade magic artifact could be worth a fortune if it can increase your mana regeneration." Oliver sighed.

Leo smiled and said, "I got most of my magic artifacts from my sponsor."

"Your sponsor must be hella rich, then."

Leo nodded. "She's Camille Light, after all."

"What?! Your sponsor is that S-Rank healer, Camille Light?!" The others were surprised to learn this information.

"No wonder… Camille Light is one of the most respected Adventurers in this part of the world. It's a pity that she's retired at such a young age, though." Sarah sighed.

After walking straight for a few more hours, Leo and the others finally reached the end of the Labyrinth, as they were able to see the Labyrinth's wall in the distance. However, they still needed to find the staircase to the next floor.

Once they reached the wall, they picked one direction and started following that path until they eventually found the staircase.